Physics Test-11...

The position of a particle at any time \(t\) is given by the relation \(x(t)=\frac{v}{A}\left(1-e^{-A t}\right)\) where \(v\) is the velocity. Then what will be the dimension of \(A\)?

Among electron, proton, neutron and α - particle, the maximum penetration capacity is for

The value of Prandtl number for air is about:

Two small bar magnets are placed in a line with like poles facing each other at a certain distance \(d\) apart. If the length of each magnet is negligible as compared to \(d\), the force between them will be inversely proportional to:

In rotational motion, Power = Torque x ________.

Bernoulli's principle is based on the law of conservation of:

A circuit has a self-inductance of 1 Henry and carries a current of 2 A. To prevent sparking, when the circuit is switched off, a capacitor which can withstand 400 V is used. The least capacitance of the capacitor connected across the switch must be equal to:

How are charge carriers produced in intrinsic semiconductors?

A bus starts to move with an acceleration of \(1\) m/s\(^{2}\). A man, who is \(48\) m behind the bus, runs to catch it with a constant velocity of \(10\) m/s. In how much time will he catch the bus?

The reactance of a capacitor of capcitance \(C \mu F\) for an a.c. of frequency \(\frac{400}{\pi} Hz\) is \(25 \Omega\). What is the value of C?